is_relative_filename - Man Page
Returns TRUE if the filename is relative. Allegro game programming library.
Synopsis
#include <allegro.h>
int is_relative_filename(const char *filename);
Description
Returns TRUE if the filename is relative or FALSE if it is absolute. Note that an absolute filename under DOS (with a device separator) will be considered as relative under Unix, because there absolute paths always start with a slash.
See Also
Referenced By
make_absolute_filename(3), make_relative_filename(3).
version 4.4.3 Allegro manual